Dissolved organic nitrogen production and export by meridional overturning in the eastern subpolar North Atlantic
Research article Dissolved organic matter (DOM) is produced in the surface and exported towards the deep ocean, adding ∼ 2 PgC/year to the global carbon export. Due to its central role in the Meridional Overturning Circulation, the eastern subpolar North Atlantic (eSPNA) contributes largely to this...
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Centro Oceanográfico de A Coruña
2021
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Online Access: | http://hdl.handle.net/10508/12543 http://hdl.handle.net/10261/316432 https://doi.org/10.1029/2018GL080284 |
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ftcsic:oai:digital.csic.es:10261/316432 2024-02-11T10:04:23+01:00 Dissolved organic nitrogen production and export by meridional overturning in the eastern subpolar North Atlantic Fernández-Castro, B. (Bieito) Álvarez, M. (Marta) Nieto-Cid, M. (Mar) Zunino-Rodríguez, P. (Patricia) Mercier, H. Álvarez-Salgado, X.A. (Xosé Antón) Laussane (Suiza) 19 June to 11 July 2002 Océan atlantique Atlantique Nord Atlantic Ocean Atlántico Norte Océano Atlántico North Atlantic 2021-10-25T13:11:02Z http://hdl.handle.net/10508/12543 http://hdl.handle.net/10261/316432 https://doi.org/10.1029/2018GL080284 en eng Centro Oceanográfico de A Coruña https://agupubs.onlinelibrary.wiley.com/toc/19448007/2019/46/7 0094-8276 http://hdl.handle.net/10508/12543 http://hdl.handle.net/10261/316432 doi:10.1029/2018GL080284 Geophysical Research Letters, 46 (7). 2019: 3832-3842 23435 open Eastern subpolar North Atlantic DON DON exported to overturning oceanic circulation DON production net nitrate uptake dissolved organic nitrogen organic nitrogen overturn engineering nitrogen research article VoR SI 2021 ftcsic https://doi.org/10.1029/2018GL080284 2024-01-16T11:44:31Z Research article Dissolved organic matter (DOM) is produced in the surface and exported towards the deep ocean, adding ∼ 2 PgC/year to the global carbon export. Due to its central role in the Meridional Overturning Circulation, the eastern subpolar North Atlantic (eSPNA) contributes largely to this export. Here we quantify the transport and budget of dissolved organic nitrogen (DON) in the eSPNA, in a box delimited by the OVIDE 2002 section and the Greenland-Iceland-Scotland sills. The Meridional Overturning Circulation exports >15.9 TgN/year of DON downward and, contrary to the extended view that these are materials of subtropical origin, up to 33% of the vertical flux derives from a net local DON production of 7.1 ± 2.6 TgN/year. The low C:N molar ratio of DOM production (7.4 ± 4.1) and the relatively short transit times in the eSPNA (3 ± 1 year) suggest that local biogeochemical transformations result in the injection of fresh bioavailable DOM to the deep ocean. 3,792 Article in Journal/Newspaper Greenland Iceland North Atlantic Digital.CSIC (Spanish National Research Council) Greenland Geophysical Research Letters 46 7 3832 3842 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Eastern subpolar North Atlantic DON DON exported to overturning oceanic circulation DON production net nitrate uptake dissolved organic nitrogen organic nitrogen overturn engineering nitrogen |
spellingShingle |
Eastern subpolar North Atlantic DON DON exported to overturning oceanic circulation DON production net nitrate uptake dissolved organic nitrogen organic nitrogen overturn engineering nitrogen Fernández-Castro, B. (Bieito) Álvarez, M. (Marta) Nieto-Cid, M. (Mar) Zunino-Rodríguez, P. (Patricia) Mercier, H. Álvarez-Salgado, X.A. (Xosé Antón) Dissolved organic nitrogen production and export by meridional overturning in the eastern subpolar North Atlantic |
topic_facet |
Eastern subpolar North Atlantic DON DON exported to overturning oceanic circulation DON production net nitrate uptake dissolved organic nitrogen organic nitrogen overturn engineering nitrogen |
description |
Research article Dissolved organic matter (DOM) is produced in the surface and exported towards the deep ocean, adding ∼ 2 PgC/year to the global carbon export. Due to its central role in the Meridional Overturning Circulation, the eastern subpolar North Atlantic (eSPNA) contributes largely to this export. Here we quantify the transport and budget of dissolved organic nitrogen (DON) in the eSPNA, in a box delimited by the OVIDE 2002 section and the Greenland-Iceland-Scotland sills. The Meridional Overturning Circulation exports >15.9 TgN/year of DON downward and, contrary to the extended view that these are materials of subtropical origin, up to 33% of the vertical flux derives from a net local DON production of 7.1 ± 2.6 TgN/year. The low C:N molar ratio of DOM production (7.4 ± 4.1) and the relatively short transit times in the eSPNA (3 ± 1 year) suggest that local biogeochemical transformations result in the injection of fresh bioavailable DOM to the deep ocean. 3,792 |
format |
Article in Journal/Newspaper |
author |
Fernández-Castro, B. (Bieito) Álvarez, M. (Marta) Nieto-Cid, M. (Mar) Zunino-Rodríguez, P. (Patricia) Mercier, H. Álvarez-Salgado, X.A. (Xosé Antón) |
author_facet |
Fernández-Castro, B. (Bieito) Álvarez, M. (Marta) Nieto-Cid, M. (Mar) Zunino-Rodríguez, P. (Patricia) Mercier, H. Álvarez-Salgado, X.A. (Xosé Antón) |
author_sort |
Fernández-Castro, B. (Bieito) |
title |
Dissolved organic nitrogen production and export by meridional overturning in the eastern subpolar North Atlantic |
title_short |
Dissolved organic nitrogen production and export by meridional overturning in the eastern subpolar North Atlantic |
title_full |
Dissolved organic nitrogen production and export by meridional overturning in the eastern subpolar North Atlantic |
title_fullStr |
Dissolved organic nitrogen production and export by meridional overturning in the eastern subpolar North Atlantic |
title_full_unstemmed |
Dissolved organic nitrogen production and export by meridional overturning in the eastern subpolar North Atlantic |
title_sort |
dissolved organic nitrogen production and export by meridional overturning in the eastern subpolar north atlantic |
publisher |
Centro Oceanográfico de A Coruña |
publishDate |
2021 |
url |
http://hdl.handle.net/10508/12543 http://hdl.handle.net/10261/316432 https://doi.org/10.1029/2018GL080284 |
op_coverage |
Laussane (Suiza) 19 June to 11 July 2002 Océan atlantique Atlantique Nord Atlantic Ocean Atlántico Norte Océano Atlántico North Atlantic |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Iceland North Atlantic |
genre_facet |
Greenland Iceland North Atlantic |
op_relation |
https://agupubs.onlinelibrary.wiley.com/toc/19448007/2019/46/7 0094-8276 http://hdl.handle.net/10508/12543 http://hdl.handle.net/10261/316432 doi:10.1029/2018GL080284 Geophysical Research Letters, 46 (7). 2019: 3832-3842 23435 |
op_rights |
open |
op_doi |
https://doi.org/10.1029/2018GL080284 |
container_title |
Geophysical Research Letters |
container_volume |
46 |
container_issue |
7 |
container_start_page |
3832 |
op_container_end_page |
3842 |
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1790600986087129088 |